4 documents found, page 1 of 1
Lighting and communications: devices, systems
Alves, Luis Nero; Rodrigues, Luis; Cura, José LuisResumo não disponível.
A multi-valued 350nm CMOS voltage reference
Lourenço, Nuno; Alves, Luis Nero; Cura, José LuisThis paper describes, a voltage reference source using sub-threshold MOSFETs. The circuit supports supply voltages ranging from 1.5V to 3.3V and temperature variations ranging from -20ºC to 80ºC. Different values for the voltage reference can be achieved without severe performance impairments. The proposed circuit was produced in the 350nm CMOS process from AMS and occupies less than 0.0335mm2. Simulation and e...
Electronic circuits for wireless optical LANs - I
Aguiar, Rui L.; Tavares, António; Cura, José Luis; Vasconcelos, Eduardo de; Alves, Luis Nero; Valadas, Rui; Santos, Dinis M.This is the first of two papers discussing practical issues and results on the implementation of low-cost transceivers for several wireless optical LANs, covering most physical layer elements. Target optical LANs under consideration have bit-rates varying between 4Mbps and 25Mbps, and input photodiode capacitance may vary between 10pF and 50pF. PPM modulation, either in a 4-PPM or 16-PPM format, istypically use...
Electronic circuits for wireless optical LANs - II
Aguiar, Rui L.; Tavares, António; Cura, José Luis; Vasconcelos, Eduardo de; Alves, Luis Nero; Valadas, Rui; Santos, Dinis M.This is the second of two papers discussing practical issues and results on the implementation of low-cost transceivers for several wireless optical LANs, covering most physical layer elements. Target optical LANs under consideration have bit-rates varying between 4Mbps and 25Mbps, and input photodiode capacitance may vary between 10pF and 50pF. PPM modulation, either in a 4-PPM or 16-PPM format, is typically u...